Anyone in the OKC area have a 11 crown reamer?

[Sturgell]

That I can rent or borrow, I need it to cut a crown on a 44 mag.

 

[Rob72]

Sent you a pm.

 

[HMCS(FMF)Ret.]

Not sure what that is, but sure sounds like it hurts.

 

[1911user]

Not sure what that is, but sure sounds like it hurts.

The crown is where the end of the barrel touches the rifling inside the barrel. That area needs to be consistent and smooth for best accuracy. The 11 refers to 11 degrees which is the angle of the crown to the rest of the barrel.

Since it is for a 44 mag, the crown cutter needs to have a pilot that will fit properly inside a 44 mag barrel. The pilot centers the cutter and keeps the cutting angle the same around the end of the barrel; i.e. it squares the cutter to the end of the barrel.

 

[tyromeo55]

The Crown is also Quite possible the most important thing done to a firearm that affects accuracy. Good and bad

 

[Huckelberry75]

We all learned a little something.

 

[Wall]

The crown is where the end of the barrel touches the rifling inside the barrel. That area needs to be consistent and smooth for best accuracy. The 11 refers to 11 degrees which is the angle of the crown to the rest of the barrel.

Since it is for a 44 mag, the crown cutter needs to have a pilot that will fit properly inside a 44 mag barrel. The pilot centers the cutter and keeps the cutting angle the same around the end of the barrel; i.e. it squares the cutter to the end of the barrel.

Actually, it squares it to the bore, not the barrel or end.

 

[grwd]

Picky picky

 

[Wall]

Picky picky

sorry, just thought it needed clarification.

 

[flatwins]

The moral to the story is that you can't just whack the barrel off and expect the thing to shoot straight.